No. 9: The Ringmaster & The Circus of Crime
Credit: Disney/Marvel
First appearing in The Incredible Hulk #3 in September 1962, Maynard Tibolbt became the Ringmaster of the Circus of Crime. Through the use of a hypnotic disc upon his ringmaster's hat, Maynard would place the audience under a hypnotic stasis and the rest of the circus performers would rob the crowd blind. Then Ringmaster would mind-wipe the audience of any memory of being robbed and the circus would pack up and move on to the next unsuspecting town.
The Ringmaster makes the list in honor of being one of the Hulk's earliest villains. Tiboldt hypnotized the Hulk and forced the green goliath into the service of the circus. With the help of Rick Jones, Hulk was able to break free from Ringmaster's mind control and thwart the Circus of Crime. Not exclusive to the Hulk, the Ringmaster has had encounters with many heroes narrowly succeeding more than once against the likes of Spider-Man, Daredevil, and even the Avengers. The Ringmaster and his circus always seem to come back around to the Hulk, pitting him against the seductive Princess Python or even a mind-controlled Dragon Man!